- High resistance turbo trainers ?
Decided after reading the race fit at 40 thread going to be a bit more structured this winter for next seasons xc racing. Have got a power meter on the road bike and know my FTP etc. however I am fairly low cadence, 20 min FTP of 379 watts done at 80 cadence and peak power sprint of 1600 is done at 100. Can’t seem to find anywhere that states what resistance levels mean against watts apart from the Wattbike site and that doesn’t seem to work for me cadence and watts wise.Posted 3 years ago
Any suggestions ?
I can spin if needed but a slow cadence has kept me right for a good few years, undiagnosed asthma meant I just used my legs instead of lungs. Getting too old too change 😉Posted 3 years ago
Re bigger gear, never used a turbo only rollers so wasn’t sure how much resistance they can give.TiRedMember
My kreitler rollers have the same resistance as my Tacx on level 3/4. I’m a spinner with 300 FTP at 100 rpm. The Tacx will provide a lot more resistance than I am happy to suffer!
Magnetic trainers have a pretty linear power curve for a given resistance. I’m settled on level 3 but as I said, I spin for power and am pretty light. If you want even more resistance lower the tyre pressure and increase the clamping force.Posted 3 years agogibberSubscriber
If its a fluid or fan trainer – bigger gears, as the resistance is nonlinear (2x speed = more than 2x resistance). Mag ones there isn’t so much difference.
Best option I found for trying to singlespeed on a turbo is bigger tyres at lower pressures. Will kill the tyres faster but they really do drag well (think riding through treacle). I used to have an old wheel with a commuter tyre and smaller sprockets on it for turboing.Posted 3 years ago
Sorry for any confusion. I was looking at the wattbike and saw that they listed watts against cadence for different resistance and didnt seem to match what I would need. Thought was odd and didn’t know if other turbos would be the same.Posted 3 years ago
I’m 82kg and the FTP of 379 is for 20 mins, best I’ve done for the hour is 329 but both done on the road with junctions etc. fancy having a proper test but with my asthma not sure anyone would test me.
Sure about the peak as have had a go at power comps at events and done ok. Peak is actually 1605, 5 secs is 1451 so drops pretty rapidly !
All done on stages crank but have used a powertap in the past and got similar results.
Thanks for all the suggestions.
That does seem quite a large discrepancy between 20 min and hour power. Usually less than 10% I think. Pretty good hour power though, firmly in cat 3 territory. Drop 10kg and you’d be awesome 😉
Anyway, most manufactures will have their power curves for their turbos listed on their web sites, you might need to do a bit of digging. I’ve got a Minoura LR760 which has a pretty wide spread, power curves here. (<- might be for sale too as I fancy a kickr.)Posted 3 years ago
Didn’t want to start anything re watts, only put in as wanted recommendations re a turbo that I could push hard on. I get carried away with numbers and comparisons. When looked at pwr figures I am highish cat 2, so hardly pro levels…Posted 3 years ago
Do ok mtb racing and trade starva segments with a local cat 1 roadie, but could I do that after 100 miles ? Could I chuff.
The cav comparison is pointless, he has never tested high and he’s a bit smaller, I’m 6’2 82kg and a bit wider..
The hour discrepancy is probably down to fitness, asthma and doing it on a commute home with towns and junctions.
Thanks for the link, I’ll do some digging.
The long and the short of it is that any turbo will be fine for what you need.
as an aside, your FTP is basically the maximum power you can put out for an hour – you don’t have a 20 minute FTP, hour FTP etc.
That’s still one hell of a 5 second power. I’ve won quite a few bunch sprints in 3/4 races and mine’s 950w or so. Admittedly I’m lighter, but even so.Posted 3 years agobensalesMember
You need DC Rainmaker for all the trainer information you can shake a power meter at:
Sounds to me like you’re advanced enough to want a resistance controlled one, like the Wahoo KICKR.Posted 3 years agobensalesMember
I don’t have one (because turbo training bores me to tears) but the point behind a KICKR and the like is that they control the resistance, not you. So, for example, if you want to train at 80% FTP, it makes you work at 80% FTP once you’ve programmed it, whether you like it or not, because it can alter the resistance and it’s got a power meter built in. You can also link them to the likes of Sufferfest vids and they will automatically increase the resistance to simulate the hills.Posted 3 years ago
Kickr looks like the winner, seems to do everything that I would want. The added bonus is with all the extras that it can do should help alleviate the boredom, sad that I am I like the strava link, seems amazing that can alter resistance to match a mountain climb. Don’t get many of them round me…Posted 3 years ago
Thanks bensales. I know what features it’s got, I’m just wondering what people actually use. I’d probably turn the ergo mode off a lot of the time. If I’m struggling to make power on a hard interval and start dropping off by a few watts momentarily, I really don’t want it cranking up the resistance at that point! Be pretty good for easier intervals though and would mean you just pick a gear and cadence you like the let it sort out the resistance. Also nice having a PM built in I think, so whatever bike you have on the turbo you know it’s consistent.Posted 3 years ago
I assume the Kickr is better than the Tacx trainers of old that can automatically adjust resistance, IMO they’re shit for steady state stuff at any sort of intensity – very lumpy feel, I always end up pushing a big gear and fighting it. Much prefer manually doing the resistance myself.Posted 3 years agoturboferretSubscriber
The great thing about the Kickr is that you can just turn your brain off or concentrate on something else – you don’t have to be constantly watching a power figure or HR etc. The Kickr sorts all that out, you just need to pedal, it’ll make sure you are always at the right power regardless of cadence. Certainly not lumpy and with the heavy flywheel feel more like normal riding – you don’t stop the moment you stop pedalling.
Cheers, RichPosted 3 years ago
Wahoo kickr arrived today. 🙂Posted 3 years ago
Thanks for all the suggestions, un boxed and sweating to bits in no time at all. Power reading a bit higher than a stages crank but might just be inept calibration or settling it in.
Really like setting a watts figure and no hiding place. My wife’s currently testing that while I sit in a comfy chair altering the watts 😉
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